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Finding the Fourth Proportional to 7,889,717.80, 11,834,576.70 and 5,202,332.20

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Solution

The fourth proportional to 7,889,717.80, 11,834,576.70 and 5,202,332.20 is: 7,803,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,889,717.80 : 11,834,576.70 = 5,202,332.20 : x
  2. Step 2: Convert to fraction form
    7,889,717.80/11,834,576.70 = 5,202,332.20/x
  3. Step 3: Cross multiply
    7,889,717.80x = 11,834,576.70 × 5,202,332.20
  4. Step 4: Simplify right side
    7,889,717.80x = 61,567,399,439,779.74
  5. Step 5: Solve for x
    x = 61,567,399,439,779.74/7,889,717.80
  6. Step 6: Final answer
    x = 7,803,498.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.